You might have seen this irresistible match-up in Mark Xander's blog. He beat me to blogging about “two of the greatest female voices on earth” applying their pipes to the US national anthem, “The Star-Spangled Banner,” but what the heck, I'm gonna rip off the sweet and smart (and hot!) Vegan Prince and ask you the same question: Who sings it better? Whitney Houston or Mariah Carey? Vote na!